The main function of the solar cells convert light energy into electrical energy solar lighting products, this phenomenon is known as the photovoltaic effect. Among the more common solar cells and more practical monocrystalline silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells, three solar lights, plenty of sunshine in good sunlight eastern and western regions, the use of polycrystalline silicon solar cells Good solar lighting, because of polycrystalline silicon solar cell production process is relatively simple solar lighting factory, the price is lower than the single crystal. Battery pack: single or multiple batteries composed during the day by the solar cell to its storage, the energy output to the light source at night. Solar lighting manufacturers | Qingdao Yi Gang (Online) | solar lighting provided by Yi Gang, Qingdao Solar Limited. Yi Gang Qingdao Solar Limited (www.gangyisolar.com) is in Qingdao, Shandong, solar and renewable energy leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qingdao Yi Gang leader with the staff warmly welcome all inquiries negotiations to create Qingdao Yi Gang better future.